Voting in person might be quite problematic for disabled people or (the specific case I'm discussing here) the British in Europe.
Which is why I used the word "default" rather than "only". And using disability as an excuse for postal voting is a tad insulting, since it's effectively saying that if we can avoid making more places accessible by using the post, we will. (Since precedents were mentioned). Can't access your local shopping mall ? Isn't that what Amazon is for ? Local High Street potholed, pavement parked, and dropped kerbs blocked ? Haven't you heard of online shopping ? And so on. That's not me being argumentative. It's things DW has been told.
Generally, I'm all for the new and improved. But when it comes to voting, there isn't really an update to the physicality of sealed ballots, counted by hand, and available for all if required. It should be regarded as the Gold Standard, and properly funded and administered. Otherwise you'll get the Blockchain Badboys taking over with a voting "app" and we suddenly get 500 Conservative MPs elected with no way of auditing the process.
Incidentally DW wheeled up the ramp to cast her vote - nothing would have stopped her.